A Moderna vaccine delivery to Canada is facing delays with a shipment expected next week being pushed into May.

There were 500,000 Moderna doses that were initially supposed to arrive in the country on April 19, that was pushed back April 29, and now the arrival is not expected until May 3.

Provinces have complained that this follows another delay from the drugmaker and it is seriously causing logistical problems for their vaccine rollout

Procurement minister Anita Anand says the issue surrounding the delays is with the quality assurance process with the company, which is trying to address it.

Moderna is expected to deliver 2.8 million doses in May in two separate shipments.

Canada has received 12.7 million doses of Moderna so far and 8.9 million have been administered.